🦄 UnicornsGrade 2Reading: grades 3-4Place valueWord problemsAdditionSubtractionMissing addends
The Case of the Missing Sparkle Horn
Oh no! The Grumble Goblin has snatched the Sparkle Sprite's magical horn! The woods are losing their shine. Only you can help track down the goblin and get the horn back!
Suspects
Possible suspects
Cross off a row as each clue rules it out. On screen, tap a row.
21 of 21 still in play
| Name | Magical Ability | Accessory | Trail Mark | Mane Color | Fears |
|---|---|---|---|---|---|
| Leo | Rainbow Beam | Glittering Cape | Feather Droppings | Goldenrod Yellow | Sour Candy |
| Poppy | Rainbow Beam | Dreamcatcher Net | Hoof Prints | Sky Blue | Mud Puddles |
| Ruby | Song Magic | Dreamcatcher Net | Feather Droppings | Sky Blue | Loud Noises |
| Chloe | Cloud Walking | Sunbeam Shoes | Hoof Prints | Sky Blue | Sour Candy |
| Jasper | Cloud Walking | Wishing Wand | Feather Droppings | Goldenrod Yellow | Sour Candy |
| Lily | Crystal Vision | Moonstone Amulet | Hoof Prints | Goldenrod Yellow | Loud Noises |
| Henry | Song Magic | Wishing Wand | Feather Droppings | Goldenrod Yellow | Mud Puddles |
| Lucas | Star Dust | Moonstone Amulet | Feather Droppings | Goldenrod Yellow | Loud Noises |
| Noah | Cloud Walking | Glittering Cape | Hoof Prints | Goldenrod Yellow | Loud Noises |
| Zoe | Cloud Walking | Dreamcatcher Net | Feather Droppings | Goldenrod Yellow | Sour Candy |
| Mia | Song Magic | Sunbeam Shoes | Hoof Prints | Sky Blue | Loud Noises |
| Daisy | Star Dust | Glittering Cape | Feather Droppings | Sky Blue | Sour Candy |
| Sam | Crystal Vision | Moonstone Amulet | Hoof Prints | Sky Blue | Sour Candy |
| Finn | Crystal Vision | Wishing Wand | Feather Droppings | Goldenrod Yellow | Sour Candy |
| Liam | Star Dust | Moonstone Amulet | Hoof Prints | Goldenrod Yellow | Sour Candy |
| Ethan | Rainbow Beam | Moonstone Amulet | Feather Droppings | Sky Blue | Mud Puddles |
| Robin | Song Magic | Sunbeam Shoes | Feather Droppings | Sky Blue | Sour Candy |
| Isabella | Star Dust | Sunbeam Shoes | Feather Droppings | Goldenrod Yellow | Mud Puddles |
| Ava | Song Magic | Sunbeam Shoes | Feather Droppings | Goldenrod Yellow | Sour Candy |
| Sophia | Star Dust | Moonstone Amulet | Hoof Prints | Sky Blue | Loud Noises |
| Maya | Song Magic | Moonstone Amulet | Hoof Prints | Cotton Candy Pink | Sour Candy |
Clue 1
Place value
The detective found a note. It listed the items the Grumble Goblin took from his lair. To know which item was NOT taken, you have to read the list carefully.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
T
63
95
18
32
71
68
72
38
50
18
32
89
38
50
16
59
17
89
18
84
59
89
T
63
95
22
67
18
22
17
71
18
22
72
43
22
T
63
43
95
18
71
59
18
T
63
What number has 6 tens and 3 ones?T
What number has 9 tens and 5 ones?H
What number has 3 tens and 8 ones?B
What number has 6 tens and 8 ones?U
What number has 6 tens and 7 ones?V
What number has 7 tens and 1 one?R
What number has 1 ten and 7 ones?D
What number has 7 tens and 2 ones?M
What number has 3 tens and 2 ones?G
What number has 5 tens and 0 ones?L
What number has 4 tens and 3 ones?C
What number has 8 tens and 9 ones?O
What number has 1 ten and 6 ones?I
What number has 5 tens and 9 ones?N
What number has 2 tens and 2 ones?A
What number has 8 tens and 4 ones?S
What number has 1 ten and 8 ones?E
0/17 letters found
Clue 2
Word problems
The Grumble Goblin left a messy trail! The detective counted his steps in each section of the woods. To figure out where he went next, look at the place value of his step counts.
Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.
Awitnesssawthevillainwas .
F
19
9
6
30
8
9
12
13
12
O
P
P
I
N
G
S
There were 25 glowing mushrooms. 6 were used up. How many glowing mushrooms are left?F
Pixie found 10 glowing mushrooms yesterday and 2 more today. How many glowing mushrooms in all?R
Pixie lined up 3 rows of 2 shiny pebbles. How many shiny pebbles in all?A
Pixie lined up 4 rows of 2 magic berries. How many magic berries in all?H
There were 16 magic berries. 3 were used up. How many magic berries are left?D
Pixie lined up 5 rows of 6 magic berries. How many magic berries in all?T
There were 14 magic berries. 5 were used up. How many magic berries are left?E
0/7 letters found
Clue 3
Addition
The Sparkle Sprites were trying to gather moonbeams to help light the path. They counted how many they had. You need to add their moonbeams together to see the total.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
T
93
86
82
56
60
51
83
34
71
68
82
74
60
34
83
82
41
77
68
60
33
96
T
93
96
52
T
93
82
60
77
52
60
92
68
83
82
33
60
71
41
68
60
67
35 + 58 =T
23 + 18 =D
31 + 55 =H
28 + 23 =B
34 + 43 =F
34 + 22 =G
30 + 41 =N
31 + 51 =E
45 + 22 =P
65 + 27 =U
39 + 21 =O
44 + 24 =R
50 + 33 =L
23 + 51 =C
36 + 16 =S
10 + 24 =I
12 + 21 =M
40 + 56 =A
0/18 letters found
Clue 4
Subtraction
The Grumble Goblin was so sneaky! He tried to hide some of his sparkly treasures. The detective found a pile, but some of them were gone. You need to subtract to find out how many were left.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
A
84
59
56
27
59
46
27
65
50
85
85
46
33
25
A
84
14
83
33
A
84
68
68
59
56
40
78
59
46
A
84
63
56
68
25
83
46
46
63
113 - 29 =A
75 - 29 =O
53 - 28 =H
40 - 7 =W
97 - 14 =R
123 - 38 =L
59 - 9 =E
70 - 5 =Y
62 - 22 =C
85 - 22 =M
83 - 24 =T
31 - 4 =F
81 - 3 =K
72 - 16 =U
23 - 9 =I
108 - 40 =S
0/16 letters found
Clue 5
Missing addends — the last clue
The Pixies were helping to count the magical dew drops. They knew how many they had at first and how many they have now. You need to find the missing number of dew drops they collected.
First solve each problem. Then find each answer in the list below and cross that sentence out. One sentence will be left — that's exactly what the villain did!
Step 1 — solve these
6 + ___ = 9
8 + ___ = 15
3 + ___ = 14
7 + ___ = 15
8 + ___ = 14
6 + ___ = 18
6 + ___ = 11
5 + ___ = 9
3 + ___ = 12
10 + ___ = 12
3 + ___ = 13
Step 2 — cross out the sentence with each answer
1.The villain hid behind a mushroom, then lost his hat.
2.The villain tripped on a root, then left a trail of crumbs.
3.The villain tiptoed over a log, then tied his shoelaces together.
4.The villain tiptoed over a log, then forgot his lunchbox.
5.The villain tripped on a root, then lost his hat.
6.The villain raced through the brambles, then forgot his lunchbox.
7.The villain hopped over a stream, then left a trail of crumbs.
8.The villain tripped on a root, then dropped his map.
9.The villain hid behind a mushroom, then dropped his map.
10.The villain hopped over a stream, then tied his shoelaces together.
11.The villain raced through the brambles, then tied his shoelaces together.
12.The villain raced through the brambles, then dropped his map.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Case of the Missing Sparkle Horn
Culprit: Leo (Rainbow Beam · Glittering Cape · Feather Droppings · Goldenrod Yellow · Sour Candy)
- Clue 1 (Place value): "THE GRUMBLE GOBLIN DOES NOT HAVE A DREAMCATCHER NET"What number has 6 tens and 3 ones? = 63 (T) · What number has 9 tens and 5 ones? = 95 (H) · What number has 3 tens and 8 ones? = 38 (B) · What number has 6 tens and 8 ones? = 68 (U) · What number has 6 tens and 7 ones? = 67 (V) · What number has 7 tens and 1 one? = 71 (R) · What number has 1 ten and 7 ones? = 17 (D) · What number has 7 tens and 2 ones? = 72 (M) · What number has 3 tens and 2 ones? = 32 (G) · What number has 5 tens and 0 ones? = 50 (L) · What number has 4 tens and 3 ones? = 43 (C) · What number has 8 tens and 9 ones? = 89 (O) · What number has 1 ten and 6 ones? = 16 (I) · What number has 5 tens and 9 ones? = 59 (N) · What number has 2 tens and 2 ones? = 22 (A) · What number has 8 tens and 4 ones? = 84 (S) · What number has 1 ten and 8 ones? = 18 (E)
- Clue 2 (Word problems): "FEATHER DROPPINGS"There were 25 glowing mushrooms. 6 were used up. How many glowing mushrooms are left? = 19 (F) · Pixie found 10 glowing mushrooms yesterday and 2 more today. How many glowing mushrooms in all? = 12 (R) · Pixie lined up 3 rows of 2 shiny pebbles. How many shiny pebbles in all? = 6 (A) · Pixie lined up 4 rows of 2 magic berries. How many magic berries in all? = 8 (H) · There were 16 magic berries. 3 were used up. How many magic berries are left? = 13 (D) · Pixie lined up 5 rows of 6 magic berries. How many magic berries in all? = 30 (T) · There were 14 magic berries. 5 were used up. How many magic berries are left? = 9 (E)
- Clue 3 (Addition): "THE GOBLIN RECOILED FROM A TASTE OF SOUR LEMON DROP"35 + 58 = 93 (T) · 23 + 18 = 41 (D) · 31 + 55 = 86 (H) · 28 + 23 = 51 (B) · 34 + 43 = 77 (F) · 34 + 22 = 56 (G) · 30 + 41 = 71 (N) · 31 + 51 = 82 (E) · 45 + 22 = 67 (P) · 65 + 27 = 92 (U) · 39 + 21 = 60 (O) · 44 + 24 = 68 (R) · 50 + 33 = 83 (L) · 23 + 51 = 74 (C) · 36 + 16 = 52 (S) · 10 + 24 = 34 (I) · 12 + 21 = 33 (M) · 40 + 56 = 96 (A)
- Clue 4 (Subtraction): "A TUFT OF YELLOW HAIR WAS STUCK TO A MUSHROOM"113 - 29 = 84 (A) · 75 - 29 = 46 (O) · 53 - 28 = 25 (H) · 40 - 7 = 33 (W) · 97 - 14 = 83 (R) · 123 - 38 = 85 (L) · 59 - 9 = 50 (E) · 70 - 5 = 65 (Y) · 62 - 22 = 40 (C) · 85 - 22 = 63 (M) · 83 - 24 = 59 (T) · 31 - 4 = 27 (F) · 81 - 3 = 78 (K) · 72 - 16 = 56 (U) · 23 - 9 = 14 (I) · 108 - 40 = 68 (S)
- Clue 5 (Missing addends): surviving statement (box 1) → Leo6 + ___ = 9 = 3 · 8 + ___ = 15 = 7 · 3 + ___ = 14 = 11 · 7 + ___ = 15 = 8 · 8 + ___ = 14 = 6 · 6 + ___ = 18 = 12 · 6 + ___ = 11 = 5 · 5 + ___ = 9 = 4 · 3 + ___ = 12 = 9 · 10 + ___ = 12 = 2 · 3 + ___ = 13 = 10
About this mystery
- Grade level
- Grade 2 math
- Math topics
- Place value, Word problems, Addition, Subtraction, Missing addends
- Reading level
- grades 3-4
- Theme
- The Case of the Missing Sparkle Horn — set in The Whispering Rainbow Woods, where unicorn trails shimmer and the air smells like sugar cookies.
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects